Browser-Based Alarm Preview
Set an Alarm for a Time or Duration
Choose a clock time or a duration from now. Keep this page open so the browser can track the alarm target.
Clock Time
Duration
If the selected time has already passed today, the alarm targets the next occurrence.
Duration alarms use the current local browser time when you press Set alarm.
Set alarm
Pause
Cancel
Test alert
Reset
Time remaining
Not set
Select a mode and set an alarm.
Browser alarms can be delayed by sleeping devices, background tabs, battery settings, or closed pages. Do not use this preview for safety-critical or medical reminders.